Outlook keeps asking for password.

Each Comcast.net email account asks for my password when checking mail. Never mind that it's been stored there since forever.  Initially this only happened when I was using a VPN, or was not on Comcast internet, and I figured it was just because I was off the Xfinity network.  However it started happening all the time.  It happens on my Android phone using Outlook as well, and half the time there it refuses to validate the actual password. Interestingly enough, on my iPad's built-in mail app there is no issue other than it not syncing that mail has been read on the PC. Which might just be an issue with the PC sync being screwed up because of the password issues.

I've tried the usual steps of clearing credential manager.  I've even completely nuked Windows and set it up from scratch. No change.  Same with my Android. Got a new phone, and the issue persists on the new device. Except now I cannot even add the email accounts to my phone because it refuses to validate the password.